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Issue 26, 2015
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Hyperbranched poly(triazole) with thermal and metal ion dual stimuli-responsiveness

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Abstract

Oligo(ethylene glycol)-terminated hyperbranched poly(triazole) (hb-PTA-OEG) with thermal and metal ion dual stimuli-responsiveness was synthesized by Cu(I)-catalyzed azide–alkyne cycloaddition polymerization, which possessed a high molecular weight (Mn = 203 kDa) and good thermal properties (Td = 367 °C, Tg = −14.1 °C). Importantly, hb-PTA-OEG exhibited a relatively low cloud point (CP) temperature ranging from 34.4 to 31.1 °C as the concentration was increased from 0.02 to 2.0 wt%. Simultaneously, hb-PTA-OEG has the ability to coordinate with various metal ions, and the type of metal ions influenced the CP of hb-PTA-OEG solution to some extent as a result of their different association strengths with the polymer, particularly, Ag+ ion showed a conspicuous contribution to increasing the CP among the several selected ions. As a result, hb-PTA-OEG can act as an absorber of metal ions, and the selective absorption of Ag+ ion could be reached by tuning temperature.

Graphical abstract: Hyperbranched poly(triazole) with thermal and metal ion dual stimuli-responsiveness

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Publication details

The article was received on 14 May 2015, accepted on 22 May 2015 and first published on 26 May 2015


Article type: Paper
DOI: 10.1039/C5PY00710K
Citation: Polym. Chem., 2015,6, 4801-4808
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    Hyperbranched poly(triazole) with thermal and metal ion dual stimuli-responsiveness

    J. Wu, W. Liu, H. Han, R. Sun, M. Xie and X. Liao, Polym. Chem., 2015, 6, 4801
    DOI: 10.1039/C5PY00710K

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